Proof request explorer filter

[loneil]

Allow a search of credentials and attributes (see designs)

Need to:

• determine how to track those credential names (discussed metadata)
• architecture for search (probably consider graphql endpoint)
• see if Jinja/static page setup will still accommodate or change up FE arch

Designs being tracked here https://www.figma.com/design/yfnehkACzpbXNRw1nGTmot/Proof-request-explorer